Maryland will provide more than $19 million in grants to reduce nutrient pollution to the Chesapeake Bay and its rivers by upgrading technology at four wastewater treatment plants in the state. Upgrading wastewater treatment facilities to remove more nitrogen and phosphorus from treated sewage is a critical part of meeting Bay cleanup goals.
The four facilities that will be upgraded are:
Biological nutrient removal (BNR) uses microorganisms to remove nitrogen and phosphorus from wastewater during treatment. Wastewater treated at facilities using BNR contains less than 8 milligrams per liter (mg/l) of nitrogen. Enhanced nutrient removal (ENR) improves upon the nutrient reductions achieved through BNR. Wastewater treated at facilities using ENR contains 3 mg/l of nitrogen and 0.3 mg/l of phosphorus.
Funding for the upgrades comes from Maryland’s Bay Restoration Fund – also known as the “Flush Fee.” To learn more about wastewater treatment plant upgrades in Maryland, visit the Maryland Department of the Environment’s website.